id summary reporter owner description type status component version resolution keywords cc guest host 20213 VirtualBox 6.1.18 VM fails to start when using e.g. port 32 of virtio-scsi controller => fixed in SVN/next maintenance Thomas Dreibholz "I created a new VM with VirtIO controller. Port 0: HDD, Port 1: CD-ROM (empty). The VM starts, as expected. After change of the CD-ROM port from 1 to 32, starting the VM fails: The VM session was aborted. Result Code: NS_ERROR_FAILURE (0x80004005) Component: SessionMachine Interface: ISession {c0447716-ff5a-4795-b57a-ecd5fffa18a4} Difference in the VBox file: --- > 87c87 < --- > The full vbox files and the log file of the failure are attached." defect closed virtual disk VirtualBox 6.1.18 fixed other other